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HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 111 (ENGINE CONTROLS SELF-DIAGNOSTICS - 2.2L)DIAGNOSTIC TESTSDTC P0116: ECT SENSOR CIRCUIT PERFORMANCE (DOHC)CONDITIONS FOR CLEARING MIL/DTC
2003 Chevrolet TrailBlazer 4.2 S, 4WD

Conditions For Clearing MIL/DTC

2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Conditions For Clearing MIL/DTC
WARNING: This page is about a different car, the 2002 Pontiac Sunfire, 2002 Pontiac Grand Am, 2002 Oldsmobile Alero, and 2002 Chevrolet Cavalier. However, it is still accessible from the selected car via links, so may be relevant.
  • The control module turns OFF the MIL after 3 consecutive drive trips when the test has run and passed.
  • A history DTC will clear if no fault conditions have been detected for 40 warm-up cycles. A warm-up cycle occurs when the coolant temperature has risen 40°F (22°C) from the start-up coolant temperature and the engine coolant reaches a temperature that is more than 158°F (70°C) during the same ignition cycle.
  • Using scan tool, clear DTCs.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.